Absence of photodichroism in the retinal receptors.
D000818:Animals; D003118:Color Perception; D005071:Evoked Potentials; D066298:In Vitro Techniques; D010786:Photoreceptor Cells; D011894:Rana pipiens; D012160:Retina; D012168:Retinal Pigments
D012168:Retinal Pigments